Keishichou Tokumubu Tokushu Kyouakuhan Taisakushitsu Dainanaka: Tokunana OVA
The OVA will be focus on when Kujaku Nijou first entering group, which occurs one year before the main anime begins.
Special Crime Investigation Unit - Special 7 OVA, Special Crime Investigation Unit - Special 7 Episode 0.5, 警視庁 特務部 特殊凶悪犯対策室 第七課 -トクナナ- OVA File.0.5「一年前、二条クジャクの憂い」
